Headrest pillow



FIG. 1 is a perspective view of headrest pillow showing my design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a front elevation view thereof; and,

FIG. 7 is a left side elevation view thereof showing use by a seated individual.

The broken line showings of tether strings and the tether string securing member in FIGS. 1, 6, and 7 of the drawings represent environmental subject matter. The broken line showing of the partial human figure and the seat portion shown in FIG. 7 represent how the claimed design may appear when in a condition of use. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a headrest pillow, as shown and described. 